I am not saying you can not do it, you can. And I know your build is much further. But there is still alot of feedback on all the stuff which is not implemented.
However, I know how you care about your games, and I am sure, you will do things right. It just seems to me, that elemental will come all together at the last while. 2,5 month? Does not seems like you are expecting to do any major changes, which is fine with me, because I like the game as it is at the moment, however it does not look like its even enough to do polish, tweaks and balance.
I just want this game shine, I want it to be success and for that, sadly, reviews has to be great. 4x genre is not that much popular and all people on the forum are only fragment of those, which might or might not play.
Most people will give it go on initial reviews and for that, game needs to be polished, fun, interesting, nice to look at and offer something unique and new.
Why I want all that? Because, then there will be huge community, so many stuff from people and a lot of people to play with.
For me healty community is the best reason to stay, chat, play and share ideas and stories. That is what will keep this game alive and interesting for many years to come.